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Journal Article
A Small RFID Tag Antenna using Proximity-coupling to Identify Metallic Objects
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- Authors
- Won Kyu Choi, Jung Suk Kim, Ji-Hoon Bae, Gi Young Choi
- Issue Date
- 2008-11
- Citation
- Microwave and Optical Technology Letters, v.50, no.11, pp.2978-2981
- ISSN
- 0895-2477
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Project Code
- 08MC4100, Development of Next Generation RFID Technology for Item Level Applications, Chae Jong- Suk
- Abstract
- This article presents the design of a small- and low-profile radio frequency identification tag antenna in the UHF band that can be stuck to metallic objects. The designed tag antenna, which uses a ceramic material as an antenna substrate, consists of a radiating patch and microstrip lines for a proximity-coupled feeding structure. Impedance matching can be simply obtained between the antenna and tag chip without any matching network using the antenna structure. The return-loss bandwidth for S11 < 10 dB and radiation efficiency are about 9.5 MHz and 40% at 911 MHz, respectively. The read range is approximately from 3 to 3.5 m when the tag antenna is mounted on a metallic surface. © 2008 Wiley Periodicals, Inc.
- KSP Keywords
- Antenna substrate, Feeding structure, Metallic surfaces, Microstrip Line, Passive radio frequency identification(RFID), Proximity-coupled, RFID Tag Antenna, Radiating Patch, Radiation Efficiency, Radio Frequency(RF), Read range